# Building High-Performance Go Microservices
Learn how to build lightning-fast microservices with Go.
## Why Go for Microservices?
Go's concurrency model and performance make it ideal for high-throughput systems.
## Example Service
```go
package main
import (
"context"
"log"
"net/http"
"time"
"github.com/gin-gonic/gin"
)
type UserService struct {
db Database
}
func (s *UserService) GetUser(c *gin.Context) {
ctx, cancel := context.WithTimeout(c.Request.Context(), 5*time.Second)
defer cancel()
userID := c.Param("id")
user, err := s.db.FindUser(ctx, userID)
if err != nil {
c.JSON(http.StatusNotFound, gin.H{"error": "User not found"})
return
}
c.JSON(http.StatusOK, user)
}
```
## Performance Optimization
Use goroutines, connection pooling, caching, and load balancing for maximum performance.
## Conclusion
Go microservices can handle massive scale with proper design.